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How do I check if a variable exists in a list in BASH
...ho 'no'
or create a function:
contains() {
[[ $1 =~ (^|[[:space:]])$2($|[[:space:]]) ]] && exit(0) || exit(1)
}
to use it:
contains aList anItem
echo $? # 0： match, 1: failed
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How to convert Milliseconds to “X mins, x seconds” in Java?
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27 Answers
27
Active
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Is Redis just a cache?
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(integer) 1
$ HMSET question:1 title "Is Redis just a cache?" asked_by 12 votes 0
OK
$ HINCRBY unique_ids answer 1
(integer) 1
$ HMSET answer:1 question_id 1 answer_text "No, its a lot more" answered_by 15 votes 1
OK
Handling Up Votes
Now, everytime someone upvotes a question or an answer, yo...
How to update Ruby to 1.9.x on Mac?
...my mac and I am trying to update to the current version of ruby on it (1.9.2) from the snow leopard default of 1.8.7. Can somebody point me to tutorial or explain the best method to update Ruby on my mac from 1.8 to 1.9.2? Thanks
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Grouped LIMIT in PostgreSQL: show the first N rows for each group?
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287
New solution (PostgreSQL 8.4)
SELECT
*
FROM (
SELECT
ROW_NUMBER() OVER (PARTITION B...
apache to tomcat: mod_jk vs mod_proxy
...proxy_ajp and mod_proxy_balancer comes as part of
standard Apache 2.2+ distribution
o Ability to use http https or AJP protocols, even within the same
balancer.
* Cons:
o mod_proxy_ajp does not support large 8K+ packet sizes.
o Basic load balancer
o Does not...
How can I change the current URL?
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edited Sep 5 '13 at 2:25
answered Oct 2 '10 at 18:10
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Is there a way to use SVG as content in a pseudo element :before or :after
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267
Yes you can! Just tested this and it works great, this is awesome! It still doesn't work with ...
What would a “frozen dict” be?
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121
Python doesn't have a builtin frozendict type. It turns out this wouldn't be useful too often (...